天然气地质学

川西坳陷中段须四段天然气成藏期次研究

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  • 中国石油化工股份有限公司石油勘探开发研究院无锡石油地质研究所,江苏 无锡 214151
王萍(1984-),女,安徽蚌埠人,工程师,硕士,主要从事油气地球化学研究. E-mail:wp2010.syky@sinopec.com.

收稿日期: 2016-01-05

  修回日期: 2016-04-15

  网络出版日期: 2019-09-11

基金资助

国家自然科学青年基金项目(编号:41302118)资助.

The hydrocarbon accumulation timing of T3x4 natural gas reservoir in the central Western Sichuan Depression

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  • Wuxi Research Institute of Petroleum Geology,Sinopec,Wuxi 214151,China

Received date: 2016-01-05

  Revised date: 2016-04-15

  Online published: 2019-09-11

摘要

川西坳陷中段上三叠统须四段经历了复杂的成岩作用以及强烈的构造演化,导致了天然气藏成藏的多期性,决定了天然气聚集和分布的复杂性。因此,对川西坳陷中段须四段天然气藏成藏期次的研究一直是勘探领域研究的重点,至今尚未取得统一的认识。通过采集新场、成都凹陷、中江—回龙、龙门山前、知新场不同构造单元重点井砂岩样品进行包裹体测试分析,并对须四段上、下2个亚段进行成藏期次的系统研究。对包裹体基本特征镜下观察及均一温度埋藏史—热史图投点的研究表明:川西坳陷中段须四下亚段为一期成藏,主要在早—中燕山期便进行了大规模的天然气充注,且后期得到了较好的保存;须四上亚段具有2期成藏的特征,早期成藏发生在早—中燕山期,但大都经过后期的改造,此后在早喜马拉雅期再次进行天然气充注,即第二期成藏。通过对晚侏罗世、早白垩世川西须四段古构造分析,进一步明确了燕山期、喜马拉雅期古构造对川西坳陷各构造单元须四段天然气聚集和分布的控制作用。

本文引用格式

王萍, 潘文蕾, 陈迎宾, 吴小奇, 王保华 . 川西坳陷中段须四段天然气成藏期次研究[J]. 天然气地球科学, 2016 , 27(8) : 1419 -1426 . DOI: 10.11764/j.issn.1672-1926.2016.08.1419

Abstract

The middle part of Western Sichuan Depression has undergone complex diagenesis and strong tectonic evolution,which controlled the complex progress of gas filling and occurrence.So the T3x4 hydrocarbon accumulation timing is an important exploration consideration and a difficult task.Sandstone samples were collected from key wells of five different tectonic units: Chengdu Sag,Xinchang,Zhongjiang-Huilong,Longmenshanqian and Zhixinchang tectonic zone.On the basis of the fluid inclusion analysis,we completed a systemic study of the hydrocarbon accumulation period of two sub-sections of T3x4,the upper and lower T3x4.The timing is constrained by the fluid inclusion types and the setting points of homogenization temperatures on a burial and thermal history diagram.This study shows that the lower T3x4 has experienced only one period of hydrocarbon accumulation,which mainly happened in the early-middle Yanshanian.That natural gas charge has a good preservation through later geological time.For the upper T3x4,there are two different periods of hydrocarbon accumulation: the earlier one is early-middle Yanshanian,but in the later period,much of the reservoir has been modified,and then refilled in the early Xishanian.The study about the paleotectonics evolution of the Late Jurassic and Early Cretaceous rocks,further explains the constraint of the geological movement during the Yanshanian and Xishanian upon the T3x4 gas accumulation and distribution.

参考文献

[1]Wang Jinqi.Early accumulation and late seal-the basic character of gas reservoirs in west Sichuan Depression[J].Natural Gas Industry,2001,21(1):5-12.[王金琪.早聚晚藏—川西坳陷天然气基本特征[J].天然气工业,2001,21(1):5-12.]
[2]Yang Keming.Status of oil & gas reservoir and Prospecting potential in western Sichuan Depression[J].Oil & Gas Geology,2003,24(4):322-326,331.[杨克明.川西坳陷油气资源现状及勘探潜力[J].石油与天然气地质,2003,24(4):322-326,331.]
[3]Ye Jun.Reservoiring Mechanism of natural gas in west Sichuan Depression?[J].Natural Gas Industry,2003,23(supplement1):1-5.[叶军.川西坳陷的天然气是深盆气吗?[J].天然气工业,2003,23(增刊1):1-5.]
[4]Qin Shengfei,Tao Shizhen,Tu Tao,et al.Characteristics of natural gas geochemistry and accumulation in western Sichuan Depression[J].Petroleum Exploration and Development,2006,34(1):34-38.[秦胜飞,陶士振,涂涛,等.川西坳陷天然气地球化学及成藏特征[J].石油勘探与开发,2006,34(1):34-38.]
[5]Wang Peng,Liu Simin,Shen Zhongmin,et al.Hydrocarbon accumulation history and its difference of gass reservoirs in Upper Triassic Formation of Sichuan Basin[J].Natural Gas Geosciences,2016,27(1):50-59.[王鹏,刘四兵,沈忠民,等.四川盆地上三叠统气藏成藏年代及差异[J].天然气地球科学,2016,27(1):50-59.]
[6][KG*5/6]Liu Shugen,Su Wei,Li Zhibin,et al.Tectonic uplifting and gas pool formation since late Cretaceous Epoch,Sichuan Basin[J].Natural Gas Geosciences,2008,19(3):293-310.[刘树根,孙伟,李智斌,等.四川盆地晚白垩世以来的构造隆升作用与天然气成藏[J].天然气地球科学,2008,19(3):293-310.]
[7]Song Yan,Hong Feng.The geological conditions of deep-basin gas in western depression of Sichuan Basin[J].Petroleum Exploration and Development,2001,28(2):11-14.[宋岩,洪峰.四川盆地川西坳陷深盆气地质条件分析[J].石油勘探与开发,2001,28(2):11-14.]
[8]Zhang Jinchuan,Liu Lifang,Tang Xuan,et al.Abnormal pressure in the source-contacting gas reservoir in western Sichuan Basin[J].Earth Science Frontiers,2008,15(2):147-155.[张金川,刘丽芳,唐玄,等.川西坳陷根缘气藏异常地层压力[J],地学前缘,2008,15(2):147-155.]
[9]Feng Qiao,Ma Shuopeng,Fan Aiping.Characteristics of fluid inclusions in Upper Paleozoic reservoirs in Ordos Basin and their geological significance[J].Oil & Gas Geology,2006,27(1):27-32.[冯乔,马硕鹏,攀爱萍.鄂尔多斯盆地上古生界储层流体包裹体特征及其地质意义[J].石油与天然气地质,2006,27(1):27-32.]
[10]Wan Xiaolong,Qiu Nansheng,Zhang Shanwen.A study on dynamic reservoiring process of hydrocarbon in lithologic reservoirs in Dongying Depression[J].Oil & Gas Geology,2004,25(4):448-451.[万晓龙,邱楠生,张善文.东营凹陷岩性油气藏动态成藏过程[J].石油与天然气地质,2004,25(4):448-451.]
[11]Zhao Wenzhi,Hu Suyun,Wang Zhecheng,et al.Key role of basement fault control on oil accumulation of Yanchang Formation,Upper Triassic,Ordos Basin[J].Petroleum Exploration and Development,2003,30(5):1-5.[赵文智,胡素云,汪泽成,等.鄂尔多斯盆地基底断裂在上三叠统延长组石油聚集中的控制作用[J].石油勘探与开发,2003,30(5):1-5.]
[12]Zhang Wenzhong,Guo Yanru,Tang Dazhen,et al.Characteristics of fluid inclusions and determination of gas accumulation period in the Upper Paleozoic reservoirs of Sulige  Gasfield[J].Acta Petrolei Sinica,2009,30(5):685-691.[张文忠,郭彦如,汤达祯,等.苏里格气田上古生界储层流体包裹体特征及成藏期次划分[J].石油学报,2009,30(5):685-691.]
[13]Gao Xianzhi,Chen Fajing.Application of fluid inclusions to determination of the times and stages of  hydrocarbon reservoir filling:A case study of Nanbaxian Oilfield in the Qaidamu Basin[J].Earth Science Frontiers,2000,7(4):548-554.[高先志,陈发景.应用流体包裹体研究油气成藏期次——以柴达木盆地南八仙油田第三系储层为例[J].地学前缘,2000,7(4):548-554.]
[14]Middleton D,Parnell J,Carey P,et al.Reconstruction of fluid migration history in Northwest Ireland using fluid inclusion studies[J].Journal of Geochemical Exploration,2000(69/70):673-677.
[15]Zhang Youyu,Tao Shizhen,Liu Keyu,et al.Authigenic illite age and hydrocarbon accumulation time in Xujiahe Formation sandstone reservoirs (Upper Triassic),Sichuan Basin[J].Acta Petrolei Sinca,2015,36(11):1367-1379.[张有瑜,陶士振,刘可禹,等,四川盆地须家河组致密砂岩气自生伊利石年龄分布与成藏时代[J].石油学报,2015,36(11):1367-1379.]

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